BASS ENHANCEMENT SYSTEM

摘要

A bass enhancement system can provide an enhanced bass effect for speakers, including relatively small speakers. The bass enhancement system can apply one or more bass enhancements to an input audio signal. For example, the bass enhancement system can exploit how the human ear processes overtones and harmonics of low-frequency sounds to create the perception that non-existent (or attenuated) low-frequency sounds are being emitted from a loudspeaker. The bass enhancement system can generate harmonics of at least some low-frequency fundamental frequencies in one embodiment. Playback of at least some harmonics of a low-frequency fundamental frequency can cause a listener to perceive the playback of the low-frequency fundamental frequency. Advantageously, in certain embodiments, the bass enhancement system can generate these harmonics without performing processing-intensive pitch-detection techniques or the like to identify the fundamental frequencies.

主权项

1. A system for enhancing bass audio, the system comprising:
a bass enhancer comprising one or more processors, the bass enhancer configured to generate harmonics of one or more bass frequencies of an input audio signal based at least in part on available headroom in the input audio signal; an equalizer configured to emphasize frequencies in the input audio signal comprising lowest reproducible frequencies of a speaker; and a level adjuster configured to adaptively apply a gain to at least a lower band of frequencies in the input audio signal, wherein the gain depends on available headroom in the input audio signal.